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Finding the Fourth Proportional to 491,017.40, 736,007.70 and 191,382.20

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Solution

The fourth proportional to 491,017.40, 736,007.70 and 191,382.20 is: 286,871.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,017.40 : 736,007.70 = 191,382.20 : x
  2. Step 2: Convert to fraction form
    491,017.40/736,007.70 = 191,382.20/x
  3. Step 3: Cross multiply
    491,017.40x = 736,007.70 × 191,382.20
  4. Step 4: Simplify right side
    491,017.40x = 140,858,772,842.94
  5. Step 5: Solve for x
    x = 140,858,772,842.94/491,017.40
  6. Step 6: Final answer
    x = 286,871.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.